Saw Filing And Management of Saws a Practical Treatise On Filing Gumming Swag
Saw Filing And Management of Saws a Practical Treatise On Filing Gumming Swag
Robert Grimshaw
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Hardness of Emery Wheels. The Tan- ite Co. Makes five distinct classes for saw gum- ming ; and can so vary the quality as to suit all tastes. We give below a brief description of these classes : "2. " Medium hard ; preferred by J the pur- chasers ; is a fast cutting wheel, too hard for some, too soft for others. "3. " Medium soft; same grain as class 2, but softer and freer cutting. "Pocono. " Extra soft, recommended by its makers, above the other grades. It is finer grained and softer than eit...her 2 or 3, and is particularly recommended to those experienced practical sawyers "who know how to grind with a light touch, and who want a free cut- ting wheel that will not create much heat. 7 ' "Paradise. " Same coarseness as "3, " but rougher, more open, and faster cutting. " 5 Special. " A fine soft wheel only used on automatic saw gumming machines 78 BRAZING BAND SAWS. Brazing Band Saws. The gasoline blowpipe is the most convenient means of heating large-size band saws for brazing ; but an ordinary mouth blow-pipe and oil lamp with a large wick makes satisfactory work for light band saws.
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